I think this is not available as a feature in ARCHICAD's Text Tool.
In ARCHICAD each individual Text Block consists of a single text column the width of which you can set, you can specify indents and Tab positions within the Text Block, and you can also set "Wrap Text" so text overflows into the next line within the Text Block.
However, it is not possible to define multiple columns within a single Text Block.
You may create a wish for this in the Wishes section.
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